PIC16F15213 datasheet(21/408 Pages) MICROCHIP

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Device Configuration

Device configuration consists of the Configuration Words, User ID, Device ID, Device Information Area (DIA) and the

Device Configuration Information (DCI) regions.

8.1

Configuration Words

There are five Configuration Words that allow the user to select the device oscillator, reset and memory protection

options. These are implemented at addresses 0x8007 - 0x800B.

Note: The DEBUG bit in the Configuration Words is managed automatically by device development tools, including

debuggers and programmers. For normal device operation, this bit should be maintained as a ‘1’.

8.2

Code Protection

Code protection allows the device to be protected from unauthorized access. Internal access to the program memory

is unaffected by any code protection setting.

The entire program memory space is protected from external reads and writes by the CP bit. When CP = 0, external

reads and writes of program memory are inhibited and a read will return all ‘0’s. The CPU can continue to read

program memory, regardless of the protection bit settings. Self-writing the program memory is dependent upon the

write protection setting.

8.3

Write Protection

Write protection allows the device to be protected from unintended self-writes. Applications, such as bootloader

software, can be protected while allowing other regions of the program memory to be modified.

The WRT bits determine which of the program memory blocks are protected.

8.4

User ID

Four words in the memory space (8000h-8003h) are designated as ID locations where the user can store checksum

or other code identification numbers. These locations are readable and writable during normal execution. See the

“VMREG Access to DIA, DCI, User ID, DEV/REV ID, and Configuration Words” section for more information on

accessing these memory locations. For more information on checksum calculation, see “Memory Programming

Specification” section in the “Electrical Specifications” chapter for more information on accessing these memory

locations. For more information on checksum calculation, see the “Family Programming Specification”.

8.5

Device ID and Revision ID

The 14-bit Device ID word is located at address 8006h and the 14-bit Revision ID is located at 8005h. These

locations are read-only and cannot be erased or modified.

Development tools, such as device programmers and debuggers, may be used to read the Device ID, Revision ID

and Configuration Words. Refer to the “NVM - Nonvolatile Memory Control” chapter for more information on

accessing these locations.

8.6

PIC16F15225/45

Device Configuration

Preliminary Datasheet

DS20006389B-page 21

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